Portable irregular chamfering machine rules for workpiece surfaces (such as cylindrical, bore, waist-shaped hole, etc) and not within the rules, external cavity edge chamfer, particularly some curved edges chamfered for large workpieces, machines can not be processed using hand arc chamfering machine the chamfer is convenient and fast. The product is compact, lightweight, easy to operate. Use it to improve the effective working hours, lower costs and help reduce labor intensity. Apply to mold, mold machining, machine tool bed processing, iron and steel processing, metal chamfer, PVC plastic sheet chamfering, manufacturing machinery and equipment, widely used in iron and steel, structural steel, mould, metal processing, metal parts and other industries. R r blade angle on the change.